Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad279ef3b432848…

MALICIOUS

PDF

84.1 KB Created: 2021-04-24 20:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a24d3aa271ac6fca6b42f5b9dd00d14 SHA-1: 26d62264693bb6745c143c84c38e96eedd95a73c SHA-256: 5ad279ef3b4328488be86a1e330df487e16cb2f980ddc4ab05d73e2ae6f8c9c2
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous external links, many pointing to disposable hosting, and the document body, though corrupted, suggests a lure related to a price guide. The presence of a 'powershell_tutorial_downloadly0n3.pdf' string and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a likely attempt to download and execute a second-stage payload via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jumiwimov.ru/strik?utm_term=racing+champions+price+guide+free
    • http://picply.ru/lenovo_y500_laptop_bodypnr7f.pdf
    • https://cdn.sqhk.co/genonitag/g3Xgcgj/77785282503.pdf
    • https://cdn-cms.f-static.net/uploads/4456999/normal_60132816d5b27.pdf
    • http://wiinorama.fun/wewidi3r5xz.pdf
    • https://cdn-cms.f-static.net/uploads/4373261/normal_606b868b2f6ac.pdf
    • http://delaem-sami.online/what_are_the_functions_of_law_in_societyzytuv.pdf
    • https://static.s123-cdn-static.com/uploads/4423431/normal_5fe060e64d5f8.pdf
    • https://cdn-cms.f-static.net/uploads/4488323/normal_60238fd39f019.pdf
    • http://pikegupima.medianewsonline.com/sbi_clerk_exam_book_download.pdf
    • http://lotsmen.com/powershell_tutorial_downloadly0n3.pdf
    • https://cdn.sqhk.co/xibetevoxaj/iajgiau/10397206105.pdf
    • https://cdn.sqhk.co/webunojixisa/Wkgj3ND/moneygram_stock_prediction_2025.pdf
    • https://cdn.sqhk.co/foroboreb/3gfhehb/15776891172.pdf
    • http://mojenisijita.mywebcommunity.org/hidrocefalia_y_anencefalia.pdf
    • https://cdn.sqhk.co/kapumikogux/Sm3gyje/67518803585.pdf
    • https://cdn-cms.f-static.net/uploads/4459177/normal_5fd96cc317e57.pdf
    • http://trynon.xyz/chameleon_launcher_pro_apkfium4.pdf
    • http://fefiwizam.sportsontheweb.net/1236646381.pdf
    • https://uploads.striki
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nitidadufetenu/cod_mw3_mod_menu_xbox_360_usb.pdf
    • https://uploads.strikinglycdn.com/files/50dcc17f-72d9-4c51-99c1-5201c6a044c2/outlander_synopsis_book_5.pdf
    • https://s3.amazonaws.com/geraromu/how_many_main_characters_in_annie.pdf
    • https://s3.amazonaws.com/zewimu/12019925730.pdf
    • https://uploads.strikinglycdn.com/files/2dbce0dd-0c21-4785-9a91-be98db869ba8/dexoxarudoxu.pdf
    • https://uploads.strikinglycdn.com/files/18c73721-208e-4b4a-a1a3-513ef2e334b4/pedinakujerotukeneruzuvu.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/antigen_immunology.pdf
    • https://uploads.strikinglycdn.com/files/02c4d5e2-c6b6-4e01-8e3c-b9d39a15cde3/honeywell_wireless_mp3_doorbell_chime_and_button.pdf
    • https://uploads.strikinglycdn.com/files/23cf891c-9bee-4207-839b-bb6793097767/14629598187.pdf
    • https://s3.amazonaws.com/pululusodogi/gamov.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f390.bin
3923bc16e81be663db8949ed32918a3d20e7e17ccbd2b2602b8efa1dfe397298
pdf-font-stream PDF embedded font (sfnt) at offset 0xF390 5544 bytes
font_01_sfnt_off00010645.bin
6d43ab73c276c22c8b29de42fabc507a26a7c7d3a6c39cf5bbd93847d00dad9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10645 11464 bytes
font_02_sfnt_off00012d54.bin
159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D54 16140 bytes